宇宙線生成核種^<10>Beおよび^<26>Alのプロセス地形学的応用  [in Japanese] In Situ-Produced Cosmogenic ^<10>Be and ^<26>Al Analyses in Process Geomorphology  [in Japanese]

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Author(s)

    • 松四 雄騎 MATSUSHI Yuki
    • 筑波大学 研究基盤総合センター 応用加速器部門 Applied Accelerator Division, Research Facility Center for Science and Technology, University of Tsukuba
    • 松倉 公憲 MATSUKURA Yukinori
    • 筑波大学 大学院 生命環境科学研究科 地球環境科学専攻 Geoenvironmental Sciences, Graduate School of Life and Environmental Sciences, University of Tsukuba

Abstract

This paper overviews methodology of in situ-produced cosmogenic ^<10>Be and ^<26>Al studies for quantifying diverse geomorphic processes. The use of this method offers a powerful tool to understand Earth surface processes and landform development in a long (10^3-10^6 yr) timescale. We introduce production mechanisms and advantages of the nuclides within terrestrial quartz, formulations in analytical modeling, and several techniques for application. The nuclide analysis provides not only the minimum exposure age or maximum erosion rate of a single rock surface, but rates of soil production on a hillslope, spatially-averaged erosion rates of a drainage basin, and speeds of sediment transport through a piedmont. Depth profiling of nuclide concentrations helps with establishing geological site-history including timings of exposure or burial events and also rates of surface denudation or sedimentation. The techniques have a potential for quantitative testing of long-standing geomorphic models and evaluating landscape responses to tectonic, climatic and anthropogenic forcing.

Journal

  • Transactions,Japanese Geomorphological Union

    Transactions,Japanese Geomorphological Union 28(2), 87-107, 2007-04-25

    日本地形学連合

References:  52

Cited by:  1

Codes

  • NII Article ID (NAID)
    110006274428
  • NII NACSIS-CAT ID (NCID)
    AN00333248
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    03891755
  • NDL Article ID
    8815346
  • NDL Source Classification
    ZM49(科学技術--地球科学--地質)
  • NDL Call No.
    Z15-386
  • Data Source
    CJP  CJPref  NDL  NII-ELS  NDL-Digital 
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